<template>
  <div>
    <el-upload
      :action="upload.url"
      :before-upload="handleBeforeUpload"
      :on-success="handleUploadSuccess"
      :on-error="handleUploadError"
      class="editor-img-uploader"
      name="file"
      :show-file-list="false"
      :headers="upload.headers"
      style="display: none"
      v-if="type === 'url'"
      :data="paramsData"
    >
    </el-upload>
    <div class="editor">
      <quill-editor
        ref="myQuillEditor"
        v-model:content="content"
        contentType="html"
        @textChange="(e: any) => $emit('update:modelValue', content)"
        :options="options"
        :style="styles"
      />
    </div>
  </div>
</template>

<script setup lang="ts">
import { QuillEditor, Quill } from '@vueup/vue-quill'
import '@vueup/vue-quill/dist/vue-quill.snow.css'
import { getToken } from '@/utils/auth'
import { ComponentInternalInstance } from 'vue'
import { generateUUID } from '@/utils/index'


const props = defineProps({
  /* 编辑器的内容 */
  modelValue: {
    type: String,
  },
  /* 高度 */
  height: {
    type: Number,
    default: null,
  },
  /* 最小高度 */
  minHeight: {
    type: Number,
    default: null,
  },
  /* 只读 */
  readOnly: {
    type: Boolean,
    default: false,
  },
  /* 上传文件大小限制(MB) */
  fileSize: {
    type: Number,
    default: 5,
  },
  /* 类型（base64格式、url格式） */
  type: {
    type: String,
    default: 'url',
  }
})

const { proxy } = getCurrentInstance() as ComponentInternalInstance

const paramsData: any = ref({
})

const upload = reactive<UploadOption>({
  headers: { Authorization: 'Bearer ' + getToken() },
  url: import.meta.env.VITE_APP_BASE_API + '/resource/oss/upload'
})
const myQuillEditor = ref()

const options = ref({
  theme: 'snow',
  bounds: document.body,
  debug: 'warn',
  modules: {
    // 工具栏配置
    toolbar: {
      container: [
        ['bold', 'italic', 'underline', 'strike'],       // 加粗 斜体 下划线 删除线
        ['blockquote', 'code-block'],                    // 引用  代码块
        [{ list: 'ordered' }, { list: 'bullet'} ],       // 有序、无序列表
        [{ indent: '-1' }, { indent: '+1' }],            // 缩进
        [{ size: ['small', false, 'large', 'huge'] }],   // 字体大小
        [{ header: [1, 2, 3, 4, 5, 6, false] }],         // 标题
        [{ color: [] }, { background: [] }],             // 字体颜色、字体背景颜色
        [{ align: [] }],                                 // 对齐方式
        ['clean'],                                       // 清除文本格式
        ['link', 'image', 'video']                       // 链接、图片、视频
      ],
      handlers: {
        image: function (value: any) {
          if (value) {
            // 调用element图片上传
            (document.querySelector('.editor-img-uploader>.el-upload') as HTMLDivElement)?.click()
          } else {
            Quill.format('image', true)
          }
        },
      },
    }
  },
  placeholder: '请输入内容',
  readOnly: props.readOnly,
})

const styles = computed(() => {
  let style: any = {}
  if (props.minHeight) {
    style.minHeight = `${props.minHeight}px`
  }
  if (props.height) {
    style.height = `${props.height}px`
  }
  return style
})

const content = ref('')
watch(() => props.modelValue, (v) => {
  if (v !== content.value) {
    content.value = v === undefined ? '<p></p>' : v
  }
}, { immediate: true })

// 图片上传成功返回图片地址
const handleUploadSuccess = (res: any) => {
  // 获取富文本实例
  let quill = toRaw(myQuillEditor.value).getQuill()
  // 如果上传成功
  if (res.code === 200) {
    // 获取光标位置
    let length = quill.selection.savedRange.index
    // 插入图片，res为服务器返回的图片链接地址
    quill.insertEmbed(length, 'image', res.data.url)
    // 调整光标到最后
    quill.setSelection(length + 1)
    proxy?.$modal.closeLoading()
  } else {
    proxy?.$modal.loading(res.msg)
    proxy?.$modal.closeLoading()
  }
}

// 图片上传前拦截
const handleBeforeUpload = (file: any) => {
  // 校检文件大小
  paramsData.value.requestId = generateUUID()
  if (props.fileSize) {
    const isLt = file.size / 1024 / 1024 < props.fileSize
    if (!isLt) {
      proxy?.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`)
      return false
    }
  }
  proxy?.$modal.loading('正在上传文件，请稍候...')
  return true
}

// 图片失败拦截
const handleUploadError = (err: any) => {
  console.error(err)
  proxy?.$modal.msgError('上传文件失败')
}
</script>

<style>
.editor, .ql-toolbar {
  white-space: pre-wrap !important;
  line-height: normal !important;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0;
  content: "保存";
  padding-right: 0;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
</style>
